Ct-BT01 is adopted CSR BlueCore 4 External chip solution.
Which includes an 8Mbit Flash memory, used with CSR Bluetooth
stack,
provides
a fully compliant Bluetooth system to v2.0 + EDR of
the
specification for data and voice communications.
Dimension: 22 x 15 x 2.8 mm
Fully Qualified Bluetooth v2.0+EDR
Enhanced Data Rate (EDR) compliant with v2.0.E.2 of specification for both2Mbps and 3Mbps modulation modes
Fully Speed Bluetooth Operation with Full Piconet support
Scatternet Support
Full speed USB v1.1 interface supports OHCI and UHCI host interfaces.Compliant with USB v2.0
UART interface with programmable baud rate up to 3Mbaud with USB and an optional bypass mode
Support for 802.11 Co-Existence
Support for 8Mbit External Flash
RoHS compliant
Bluetooth class 2 RFoutput
2.4GHz~2.483GHZ ISM band
Interface to host system through 38-pads on PCB edges
Bluetooth stack runs on-chip in a variety of configurations, includes Standard HCI (UART or USB), Fully
embedded to RFCOMM, or customized builds with embedded application code.
Ct-BT01 
